Weather Records on 1 May 2018

519 weather records were set or tied worldwide on 1 May 2018. Highest significance: Aspendell, US.

Key Facts for 1 May 2018

On 1 May 2018, 519 weather records were set or tied at long-record stations worldwide.
258 were record highs and 135 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 22 monthly and 497 daily.
Aspendell set a daily record snowfall of 24.1 cm (9.5 in) on 1 May 2018.
Across 165 earlier years (1795 to 2026) the same calendar date averaged 442 records.

Record Map

519 stations

519 station records on 1 May 2018 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 1 May 2018: highest significance records shown on the map
Station	Country	Type	Value	Significance
Aspendell	United States	Record daily snowfall	24.1 cm (9.5 in)	75 of 100 (Major)
Gopalpur	India	Record daily precipitation	99.1 mm (3.9 in)	72 of 100 (Major)
Puri	India	Record daily precipitation	96.0 mm (3.8 in)	69 of 100 (Major)
Aspendell	United States	Record snow depth	22.9 cm (9.0 in)	60 of 100 (Major)
Munising	United States	Record snow depth	33.0 cm (13.0 in)	57 of 100 (Notable)
Lake Placid 2 S	United States	Record snow depth	12.7 cm (5.0 in)	52 of 100 (Notable)
Soummam	Algeria	Record daily precipitation	35.1 mm (1.4 in)	46 of 100 (Notable)
Dno	Russia	Record daily precipitation	27.9 mm (1.1 in)	45 of 100 (Notable)
Sussex 1 NW	United States	Record low maximum temperature	7.8 C (46.0 F)	45 of 100 (Notable)
Hayward Rs	United States	Record high minimum temperature	18.9 C (66.0 F)	43 of 100 (Notable)
Mondovi	United States	Record high minimum temperature	18.3 C (64.9 F)	42 of 100 (Notable)
Boysen Dam	United States	Record daily precipitation	35.3 mm (1.4 in)	42 of 100 (Notable)
Ashland	United States	Record high minimum temperature	17.8 C (64.0 F)	41 of 100 (Notable)
Broken Bow 2 W	United States	Record daily precipitation	36.3 mm (1.4 in)	41 of 100 (Notable)
Concordia ASOS	United States	Record daily precipitation	55.4 mm (2.2 in)	41 of 100 (Notable)
Haines AP	United States	Record high minimum temperature	6.1 C (43.0 F)	41 of 100 (Notable)
Kapan	Armenia	Record daily precipitation	99.3 mm (3.9 in)	40 of 100 (Notable)
Port Jervis	United States	Record low maximum temperature	6.7 C (44.1 F)	40 of 100 (Notable)
Traverse Cy Cherry Capital AP	United States	Record high minimum temperature	17.2 C (63.0 F)	39 of 100 (Notable)
Nacocolevu	Fiji	Record daily precipitation	139.0 mm (5.5 in)	38 of 100 (Notable)
Paradise	United States	Record high minimum temperature	11.1 C (52.0 F)	38 of 100 (Notable)
Osceola	United States	Record high minimum temperature	16.7 C (62.1 F)	37 of 100 (Notable)
Elk City 4 W	United States	Record high minimum temperature	17.8 C (64.0 F)	37 of 100 (Notable)
Alpena Co Rgnl AP	United States	Record high maximum temperature	30.0 C (86.0 F)	37 of 100 (Notable)
Poltava	Ukraine	Record high minimum temperature	14.7 C (58.5 F)	36 of 100 (Notable)
Natural Brg	United States	Record low minimum temperature	-2.8 C (27.0 F)	36 of 100 (Notable)
Sublette 7WSW	United States	Record high minimum temperature	16.1 C (61.0 F)	36 of 100 (Notable)
Huma	China	Record low minimum temperature	-9.2 C (15.4 F)	35 of 100 (Notable)
Ben Gurion	Israel	Record high minimum temperature	24.5 C (76.1 F)	35 of 100 (Notable)
Nakhon Si Thammarat	Thailand	Record daily precipitation	52.3 mm (2.1 in)	35 of 100 (Notable)
Chapman	United States	Record high minimum temperature	18.9 C (66.0 F)	35 of 100 (Notable)
Tahquamenon Falls Sp	United States	Record snow depth	33.0 cm (13.0 in)	35 of 100 (Notable)
Miami	United States	Record high minimum temperature	20.0 C (68.0 F)	35 of 100 (Notable)
Tupper Lake Sunmount	United States	Record daily precipitation	27.9 mm (1.1 in)	34 of 100 (Routine)
McKinley Park	United States	Record daily snowfall	6.1 cm (2.4 in)	34 of 100 (Routine)
Enisejsk	Russia	Record high minimum temperature	9.1 C (48.4 F)	33 of 100 (Routine)
Leadhills	United Kingdom	Record daily precipitation	29.2 mm (1.1 in)	33 of 100 (Routine)
Cortez	United States	Record high minimum temperature	9.4 C (48.9 F)	33 of 100 (Routine)
Belleville	United States	Record high minimum temperature	16.7 C (62.1 F)	33 of 100 (Routine)
Green Bay	United States	Record high minimum temperature	15.6 C (60.1 F)	33 of 100 (Routine)
Midland Odessa	United States	Record high minimum temperature	19.4 C (66.9 F)	33 of 100 (Routine)
Swan Valley	United States	Record daily snowfall	5.1 cm (2.0 in)	32 of 100 (Routine)
Elizabethton	United States	Record low minimum temperature	0.6 C (33.1 F)	32 of 100 (Routine)
Chandbali	India	Record daily precipitation	29.0 mm (1.1 in)	31 of 100 (Routine)
Krasnojarsk	Russia	Record high maximum temperature	25.5 C (77.9 F)	31 of 100 (Routine)
Alpine	United States	Record high minimum temperature	8.3 C (46.9 F)	31 of 100 (Routine)
Minsk	Belarus	Record high minimum temperature	14.7 C (58.5 F)	30 of 100 (Routine)
Paveletz	Russia	Record high maximum temperature	27.2 C (81.0 F)	30 of 100 (Routine)
Minusinsk	Russia	Record high maximum temperature	27.3 C (81.1 F)	30 of 100 (Routine)
Mazanovo	Russia	Record low minimum temperature	-7.7 C (18.1 F)	30 of 100 (Routine)
Kursk	Russia	Record high maximum temperature	26.7 C (80.1 F)	30 of 100 (Routine)
Laveen 3 SSE	United States	Record low maximum temperature	21.7 C (71.1 F)	30 of 100 (Routine)
Abilene	United States	Record high minimum temperature	20.0 C (68.0 F)	30 of 100 (Routine)
Brownsville	United States	Record high minimum temperature	25.6 C (78.1 F)	30 of 100 (Routine)
Onahama	Japan	Record high maximum temperature	26.1 C (79.0 F)	29 of 100 (Routine)
Olenek	Russia	Record high minimum temperature	3.8 C (38.8 F)	29 of 100 (Routine)
Rjazan	Russia	Record high maximum temperature	27.2 C (81.0 F)	29 of 100 (Routine)
Lovewell Dam	United States	Record high minimum temperature	16.7 C (62.1 F)	29 of 100 (Routine)
Topeka Forbes Fld	United States	Record high minimum temperature	19.4 C (66.9 F)	29 of 100 (Routine)
Caballo Dam	United States	Record high minimum temperature	15.6 C (60.1 F)	28 of 100 (Routine)

Counts by Type and Timescale

519 records

Records set or tied on 1 May 2018 by type: Highest daily maximum 102, Lowest daily maximum 53, Highest daily minimum 156, Lowest daily minimum 82, Heaviest daily rainfall 113, Heaviest daily snowfall 7, Deepest snow cover 6.

Records on 1 May 2018 by type
Record type	Records
Highest daily maximum	102
Lowest daily maximum	53
Highest daily minimum	156
Lowest daily minimum	82
Heaviest daily rainfall	113
Heaviest daily snowfall	7
Deepest snow cover	6

Records on 1 May 2018 by timescale: all-time 0, monthly 22, daily 497.

How Much Records Were Beaten By

418 broken records

Margins by which the 418 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 190.0. Ties are not counted.

Top 20 by Significance

1 May 2018

Top 20 records on 1 May 2018 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 May 2018	Aspendell, US	daily snowfall	24.1 cm (9.5 in)	19.0 cm (7.5 in)	104 years	75 of 100 (Major)
1 May 2018	Gopalpur, IN	daily rain	99.1 mm (3.9 in)	54.6 mm (2.1 in)	93 years	72 of 100 (Major)
1 May 2018	Puri, IN	daily rain	96.0 mm (3.8 in)	79.7 mm (3.1 in)	64 years	69 of 100 (Major)
1 May 2018	Aspendell, US	monthly snow depth	22.9 cm (9.0 in)	10.2 cm (4.0 in)	106 years	60 of 100 (Major)
1 May 2018	Munising, US	monthly snow depth	33.0 cm (13.0 in)	7.6 cm (3.0 in)	100 years	57 of 100 (Notable)
1 May 2018	Lake Placid 2 S, US	monthly snow depth	12.7 cm (5.0 in)	2.5 cm (1.0 in)	107 years	52 of 100 (Notable)
1 May 2018	Soummam, DZ	daily rain	35.1 mm (1.4 in)	29.0 mm (1.1 in)	28 years	46 of 100 (Notable)
1 May 2018	Dno, RU	daily rain	27.9 mm (1.1 in)	11.4 mm (0.4 in)	56 years	45 of 100 (Notable)
1 May 2018	Sussex 1 NW, US	daily low max	7.8 C (46.0 F)	2.8 C (5.0 F)	124 years	45 of 100 (Notable)
1 May 2018	Hayward Rs, US	daily high min	18.9 C (66.0 F)	1.7 C (3.1 F)	104 years	43 of 100 (Notable)
1 May 2018	Mondovi, US	daily high min	18.3 C (64.9 F)	1.6 C (2.9 F)	104 years	42 of 100 (Notable)
1 May 2018	Boysen Dam, US	daily rain	35.3 mm (1.4 in)	20.8 mm (0.8 in)	23 years	42 of 100 (Notable)
1 May 2018	Ashland, US	daily high min	17.8 C (64.0 F)	0.6 C (1.1 F)	104 years	41 of 100 (Notable)
1 May 2018	Broken Bow 2 W, US	daily rain	36.3 mm (1.4 in)	2.3 mm (0.09 in)	96 years	41 of 100 (Notable)
1 May 2018	Concordia ASOS, US	daily rain	55.4 mm (2.2 in)	9.2 mm (0.36 in)	80 years	41 of 100 (Notable)
1 May 2018	Haines AP, US	daily high min	6.1 C (43.0 F)	0.5 C (0.9 F)	101 years	41 of 100 (Notable)
1 May 2018	Kapan, AM	monthly rain	99.3 mm (3.9 in)	3.3 mm (0.13 in)	58 years	40 of 100 (Notable)
1 May 2018	Port Jervis, US	daily low max	6.7 C (44.1 F)	0.5 C (0.9 F)	100 years	40 of 100 (Notable)
1 May 2018	Traverse Cy Cherry Capital AP, US	daily high min	17.2 C (63.0 F)	2.2 C (4.0 F)	84 years	39 of 100 (Notable)
1 May 2018	Nacocolevu, FJ	monthly rain	139.0 mm (5.5 in)	38.5 mm (1.5 in)	3 years	38 of 100 (Notable)

Significance is a score from 0 to 100 combining margin, the age of the old record and the length of the station's record. How it is computed.

The Same Date in Other Years

1795 to 2018

Records set or tied on this calendar date in each year from 1795 to 2018. 2018 had 519 records.

Counts for years before the ledger starts come from the same station rules.

Records on 05-01 in each year
Year	Records
1795	1
1802	1
1804	1
1814	1
1818	1
1835	1
1836	1
1840	1
1846	2
1847	1
1850	1
1851	1
1857	1
1860	1
1861	1
1864	2
1865	1
1868	2
1872	1
1875	4
1878	2
1879	2
1880	3
1881	2
1884	1
1885	1
1886	2
1887	2
1888	2
1889	3
1890	2
1891	5
1892	6
1893	2
1894	5
1896	1
1897	4
1898	1
1899	8
1900	1
1901	5
1902	7
1903	9
1904	9
1905	13
1906	12
1907	31
1908	20
1909	49
1910	13
1911	22
1912	18
1913	54
1914	23
1915	27
1916	27
1917	37
1918	34
1919	150
1920	186
1921	41
1922	92
1923	64
1924	63
1925	118
1926	500
1927	125
1928	190
1929	142
1930	263
1931	537
1932	220
1933	706
1934	305
1935	276
1936	368
1937	218
1938	304
1939	227
1940	731
1941	333
1942	1,036
1943	526
1944	229
1945	350
1946	415
1947	655
1948	774
1949	405
1950	439
1951	894
1952	557
1953	917
1954	1,506
1955	772
1956	1,106
1957	359
1958	448
1959	764
1960	737
1961	588
1962	615
1963	704
1964	312
1965	360
1966	707
1967	948
1968	426
1969	429
1970	1,075
1971	444
1972	562
1973	841
1974	589
1975	286
1976	673
1977	545
1978	1,202
1979	612
1980	507
1981	1,265
1982	508
1983	1,423
1984	640
1985	789
1986	512
1987	1,098
1988	1,058
1989	949
1990	922
1991	633
1992	1,201
1993	1,101
1994	1,210
1995	1,365
1996	1,439
1997	804
1998	951
1999	932
2000	809
2001	1,106
2002	1,221
2003	964
2004	887
2005	1,320
2006	734
2007	857
2008	979
2009	679
2010	1,151
2011	716
2012	796
2013	976
2014	941
2015	550
2016	844
2017	1,163
2018	519
2019	788
2020	1,099
2021	834
2022	319
2023	912
2024	458
2025	430
2026	623

Download the Data

Data for records on 2018-05-01: CSV or JSON. Field meanings are on the data page.

Sources: Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Made with Natural Earth. Public domain map data. Borders are Natural Earth's de facto depiction. Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 25	402
25 to 50	8
50 to 75	3
75 to 100	3
100 to 125	1
125 to 150	0
150 to 175	0
175 to 200	1